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When Push Would Help to Improve One's Performance —— A Message from Natural Convection under Spatial Confinement

Speaker

Shidi Huang, Southern University of Science and Technology

Time

2019.06.04 10:30-11:30

Venue

Room 306, No.5 Science Building

Abstract

It is well known that a certain degree of constraint or stress can make one perform better and yield higher productivity. However, too much constraint or over-stress can lead one perform poorly or even collapse down. Interestingly, similar phenomenon was observed in a convection system under spatial confinement. This system is called Rayleigh-Bénard convection, an idealized model for studying general convection phenomena in nature and industrial applications. Based on the conventional physical picture, if one would like to enhance the convective heat transfer efficiency, it is preferred to make the flow stronger and faster. In this talk, I will show that how heat transport can be significantly enhanced by using a simple spatial-confinement approach, despite that the overall flow is slowed down greatly. In this newly-discovered flow regime, both the global and local thermal properties exhibit universal behaviors, which are originated from the elementary flow structure in the system. By examining the mechanism of the above phenomenon and making an interesting analogy, I will conclude this talk with a take-home message that when push would help to improve one’s performance.

Bio

Shidi Huang graduated from the Physics Department of Fudan University in 2009. He received his Ph.D. from the Chinese University of Hong Kong in 2014. He joined the Southern University of Science and Technology in early 2017 and is currently an associate professor and doctoral tutor. He is mainly engaged in experimental research of fluid mechanics. His research interests include turbulence, natural convection, ocean circulation dynamics, and self-organizing behavior. The related results are published in the journal Physical Review Letters, Journal of Geophysical Research-Oceans, etc. The work was representative, and work on the ocean mixing rate was selected as the cover article for the Journal of Geophysical Research-Oceans. To this end, he won the “Hong Kong Young Scientist Award” and other academic awards, and was selected as the National Specialist (Youth) of the Central Organization Department. (Learn more, please write to: huangsd@sustech.edu.cn.)